Basically I like MrGr33n's design, but I wanted to change a few things:

-Mounting on the slide from above instead of below (no falling down)
-Height adjustment
-Extension of the cable guide
-Construction reinforcement

I use this together with https://www.thingiverse.com/thing:3363489
In my opinion, this solution is a good compromise and not so different from the stock cable routing (approximately the same path in + and - Y-direction). But the connection points on the hotbed are relieved now and now rubber buffer can be used instead of the springs without any problems.

Anycubic Mega S

No

Yes

0.3 mm

20

Support from bed.